Outputs (187)

Limits, stability and disturbance rejection analysis of voltage control loop strategies for grid forming converters in DC and AC microgrids with high penetration of constant power loads (2017)
Presentation / Conference Contribution
Navarro-Rodríguez, Á., Garcia, P., Cano, J., & Sumner, M. Limits, stability and disturbance rejection analysis of voltage control loop strategies for grid forming converters in DC and AC microgrids with high penetration of constant power loads. Presented at 2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe),

This paper extensively analyzes the operation limits, system stability and disturbance rejection capability
of the voltage control loops used in master-slave AC and DC Microgrids (MGs). Two different control schemes are studied analytically, simulat... Read More about Limits, stability and disturbance rejection analysis of voltage control loop strategies for grid forming converters in DC and AC microgrids with high penetration of constant power loads.

Integrated design of motor drives using random heuristic optimization for aerospace applications (2017)
Presentation / Conference Contribution
Cheong, B., Giangrande, P., Galea, M., Zanchetta, P., & Wheeler, P. Integrated design of motor drives using random heuristic optimization for aerospace applications. Presented at SAE AeroTech Congress and Exhibition, AEROTECH 2017

High power density for aerospace motor drives is a key factor in the successful realization of the More Electric Aircraft (MEA) concept. An integrated system design approach offers optimization opportunities, which could lead to further improvements... Read More about Integrated design of motor drives using random heuristic optimization for aerospace applications.

Carbon dioxide measurements using long period grating optical fibre sensor coated with metal organic framework HKUST-1 (2017)
Journal Article
Hromadka, J., Tokay, B., Correia, R., Morgan, S. P., & Korposh, S. (2018). Carbon dioxide measurements using long period grating optical fibre sensor coated with metal organic framework HKUST-1. Sensors and Actuators B: Chemical, 255(3), https://doi.org/10.1016/j.snb.2017.09.041

An optical fibre long period grating (LPG) based carbon dioxide (CO2) sensor coated with HKUST-1, a material from the metal organic framework family, functional coating is presented. In-situ crystallization and layer by layer (LbL) techniques of HKUS... Read More about Carbon dioxide measurements using long period grating optical fibre sensor coated with metal organic framework HKUST-1.

Voltage-Double Magnetically Coupled Impedance Source Networks (2017)
Journal Article
Ji, Y., Liu, H., Zhang, C., & Wheeler, P. (2018). Voltage-Double Magnetically Coupled Impedance Source Networks. IEEE Transactions on Power Electronics, 33(7), 5983-5994. https://doi.org/10.1109/tpel.2017.2747590

Use of optical fibres for multi-parameter monitoringin electrical AC machines (2017)
Presentation / Conference Contribution
Hind, D. M., Gerada, C., Galea, M., Borg Bartalo, J., Fabian, M., Sun, T., & Grattan, K. T. (2017, August). Use of optical fibres for multi-parameter monitoringin electrical AC machines. Presented at IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED 2017)

This paper describes a new approach to multi-parameter monitoring for electrical AC machines. It is demonstrated that speed, torque and temperature can be measured using optical fibres incorporating sensors in the form of fibre Bragg gratings (FBGs)... Read More about Use of optical fibres for multi-parameter monitoringin electrical AC machines.

A Wide Input-Voltage Range Quasi-Z-Source Boost DC–DC Converter With High-Voltage Gain for Fuel Cell Vehicles (2017)
Journal Article
Zhang, Y., Fu, C., Sumner, M., & Wang, P. (2018). A Wide Input-Voltage Range Quasi-Z-Source Boost DC–DC Converter With High-Voltage Gain for Fuel Cell Vehicles. IEEE Transactions on Industrial Electronics, 65(6), 5201-5212. https://doi.org/10.1109/TIE.2017.2745449

A quasi-Z-source Boost DC-DC converter which uses a switched-capacitor is proposed for fuel cell vehicles. The topology can obtain a high voltage gain with a wide input-voltage range, and requires only a low voltage stress across each of the componen... Read More about A Wide Input-Voltage Range Quasi-Z-Source Boost DC–DC Converter With High-Voltage Gain for Fuel Cell Vehicles.

SiC/GaN power semiconductor devices: a theoretical comparison and experimental evaluation under different switching conditions (2017)
Journal Article
Li, K., Evans, P., & Johnson, M. (in press). SiC/GaN power semiconductor devices: a theoretical comparison and experimental evaluation under different switching conditions. IET Electrical Systems in Transportation, https://doi.org/10.1049/iet-est.2017.0022

The conduction and switching losses of SiC and GaN power transistors are compared in this paper. Voltage rating of commercial GaN power transistors is less than 650V while that of SiC power transistors is less than 1200V. The paper begins with a theo... Read More about SiC/GaN power semiconductor devices: a theoretical comparison and experimental evaluation under different switching conditions.

The Alternate Arm Converter (AAC) - "short-overlap" mode operation - analysis and design parameter selection (2017)
Journal Article
Farr, E., Feldman, R., Clare, J. C., Watson, A. J., & Wheeler, P. (2018). The Alternate Arm Converter (AAC) - "short-overlap" mode operation - analysis and design parameter selection. IEEE Transactions on Power Electronics, 33(7), 5641-5659. https://doi.org/10.1109/TPEL.2017.2742899

This paper presents converter operation principles and theoretical analyses for “short-overlap” mode operation of the Alternate Arm Converter (AAC), which is a type of modular multilevel Voltage Source Converter (VSC) that has been proposed for HVDC... Read More about The Alternate Arm Converter (AAC) - "short-overlap" mode operation - analysis and design parameter selection.

Using multi time-scale electro-thermal simulation approach to evaluate SiC-MOSFET power C=converter in virtual prototyping design tool (2017)
Presentation / Conference Contribution
Li, K., Evans, P., & Johnson, C. M. Using multi time-scale electro-thermal simulation approach to evaluate SiC-MOSFET power C=converter in virtual prototyping design tool. Presented at IEEE COMPEL 2017

Using virtual prototyping (VP) design tool to eval¬uate power converter electro-thermal performance can help designers to validate prototype in a quick way. However, different system time-scale requires efficient electro-thermal simulation techniques... Read More about Using multi time-scale electro-thermal simulation approach to evaluate SiC-MOSFET power C=converter in virtual prototyping design tool.

Grid impedance estimation for islanding detection and adaptive control of converters (2017)
Journal Article
Ghanem, A., Rashed, M., Sumner, M., Elsayes, M. A., & Mansy, I. (2017). Grid impedance estimation for islanding detection and adaptive control of converters. IET Power Electronics, 10(11), 1279-1288. https://doi.org/10.1049/iet-pel.2016.0780

Power system (grid) impedance is time varying due to the changing structure of the power system configuration and it can have a considerable influence on the control and stability of grid connected converters. This paper presents an online grid imped... Read More about Grid impedance estimation for islanding detection and adaptive control of converters.